The Battle of the Teutoburg Forest (, Hermannsschlacht or Varusschlacht), described as clades Variana (the Varian disaster) by Roman historians, took place in 9 CE, when an alliance of Germanic tribes led by Arminius of the Cherusci ambushed and decisively destroyed three Roman legions and their auxiliaries, led by Publius Quinctilius Varus. Despite several successful campaigns and raids by the Roman army in the years after the battle, they never again attempted to conquer Germania territory east of the Rhine River.